/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d2137;
            --primary-light: #1a3a5c;
            --primary-dark: #081525;
            --accent: #f0a500;
            --accent-hover: #d49400;
            --accent-light: #fff3d6;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0d2137;
            --text: #1a2a3a;
            --text-light: #5a6a7a;
            --text-white: #ffffff;
            --text-muted: #8a9aaa;
            --border: #e4e8ee;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(13, 33, 55, 0.08);
            --shadow-lg: 0 12px 40px rgba(13, 33, 55, 0.14);
            --shadow-hover: 0 12px 36px rgba(13, 33, 55, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-w: 1200px;
            --header-h: 72px;
            --tab-h: 64px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-h);
            padding-bottom: var(--tab-h);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        @media (min-width: 1024px) {
            body {
                padding-bottom: 0;
            }
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.4rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.6vw, 2.6rem);
            margin-bottom: 0.5rem;
        }
        h3 {
            font-size: clamp(1.2rem, 2.4vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .section {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            font-size: 1.1rem;
            max-width: 640px;
            margin: 12px auto 0;
            color: var(--text-muted);
        }

        /* ===== Header / Nav (桌面) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(13, 33, 55, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo a {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo a i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo a:hover {
            color: var(--accent);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a i {
            font-size: 1rem;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-main a.active {
            color: var(--text-white);
            background: rgba(240, 165, 0, 0.18);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.3);
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            color: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(240, 165, 0, 0.4);
        }
        .nav-cta i {
            opacity: 1 !important;
        }

        /* ===== Mobile Tab 导航 (底部) ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            height: var(--tab-h);
            background: rgba(13, 33, 55, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-around;
            padding: 0 4px;
            display: none;
        }
        @media (max-width: 1023px) {
            .mobile-tab-bar {
                display: flex;
            }
            .site-header .nav-main {
                display: none;
            }
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.7rem;
            font-weight: 500;
            transition: all var(--transition);
            min-width: 56px;
            text-decoration: none;
        }
        .tab-item i {
            font-size: 1.3rem;
            transition: color var(--transition);
        }
        .tab-item span {
            font-size: 0.6rem;
            letter-spacing: 0.3px;
        }
        .tab-item:hover {
            color: rgba(255, 255, 255, 0.85);
        }
        .tab-item.active {
            color: var(--accent);
        }
        .tab-item.active i {
            color: var(--accent);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(13, 33, 55, 0.6) 0%, rgba(8, 21, 37, 0.9) 80%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.18);
            color: var(--accent);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(240, 165, 0, 0.2);
        }
        .hero-badge i {
            font-size: 0.9rem;
        }
        .hero-content h1 {
            color: var(--text-white);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            color: var(--accent);
        }
        .hero-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.2rem;
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240, 165, 0, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.6);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px 48px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stat-item .num span {
            color: var(--accent);
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }

        /* ===== 平台介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--bg-card);
        }
        .intro-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        @media (max-width: 768px) {
            .intro-image img {
                height: 240px;
            }
        }
        .intro-text h2 {
            margin-bottom: 16px;
        }
        .intro-text p {
            margin-bottom: 20px;
            font-size: 1.05rem;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        @media (max-width: 480px) {
            .intro-features {
                grid-template-columns: 1fr;
            }
        }
        .intro-feat-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-card);
            padding: 16px 18px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .intro-feat-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .intro-feat-item i {
            color: var(--accent);
            font-size: 1.3rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .intro-feat-item h4 {
            font-size: 0.95rem;
            margin-bottom: 4px;
        }
        .intro-feat-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 分类入口卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 900px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 540px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .cat-card-img {
            height: 200px;
            overflow: hidden;
            background: var(--primary-light);
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.06);
        }
        .cat-card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .cat-card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex: 1;
        }
        .cat-card-body .btn-sm {
            align-self: flex-start;
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            background: var(--accent-light);
            color: var(--primary);
            font-weight: 600;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cat-card-body .btn-sm:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .cat-tag {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent-hover);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        /* ===== 数据 / 流程板块 ===== */
        .stats-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stats-section .section-title h2 {
            color: var(--text-white);
        }
        .stats-section .section-title h2::after {
            background: var(--accent);
        }
        .stats-section .section-title p {
            color: rgba(255, 255, 255, 0.5);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(240, 165, 0, 0.2);
            transform: translateY(-4px);
        }
        .stat-card .icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-card .num span {
            color: var(--accent);
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 6px;
        }

        /* 流程步骤 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }
        @media (max-width: 900px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }
        .process-step {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            transition: all var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .process-step h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .process-step p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        /* ===== 最新资讯列表 ===== */
        .post-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 768px) {
            .post-list {
                grid-template-columns: 1fr;
            }
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .post-card-img {
            height: 200px;
            overflow: hidden;
            background: var(--primary-light);
        }
        .post-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .post-card:hover .post-card-img img {
            transform: scale(1.05);
        }
        .post-card-body {
            padding: 22px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .post-meta .cat {
            background: var(--accent-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.7rem;
        }
        .post-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .post-card-body h3 a {
            color: var(--primary);
        }
        .post-card-body h3 a:hover {
            color: var(--accent-hover);
        }
        .post-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            flex: 1;
        }
        .post-card-body .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-hover);
            display: flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
        }
        .post-card-body .read-more:hover {
            color: var(--primary);
        }
        .empty-msg {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 1rem;
        }
        .empty-msg i {
            font-size: 2.4rem;
            color: var(--border);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 特色功能 / 服务亮点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 900px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 540px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }
        .feat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 26px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }
        .feat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .feat-card .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-size: 1.8rem;
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .feat-card:hover .icon {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .feat-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .feat-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(240, 165, 0, 0.04);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-actions .btn-primary {
            padding: 16px 40px;
            font-size: 1.1rem;
        }
        .cta-actions .btn-outline {
            padding: 16px 40px;
            font-size: 1.1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 24px;
        }
        .site-footer .container {
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 540px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .footer-brand .logo a {
            font-size: 1.3rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.45);
            max-width: 320px;
            margin-bottom: 16px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 0.65rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px 28px;
                margin-top: 32px;
                padding-top: 20px;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .stats-grid {
                gap: 16px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .num {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }

        /* 桌面端显示顶部导航，隐藏移动端tab */
        @media (min-width: 1024px) {
            .mobile-tab-bar {
                display: none !important;
            }
        }
        @media (max-width: 1023px) {
            .site-header .nav-main {
                display: none !important;
            }
            .site-header .container {
                justify-content: center;
            }
            .logo a {
                font-size: 1.3rem;
            }
        }

/* roulang page: article */
:root {
    --primary: #e63946;
    --primary-dark: #c1121f;
    --primary-light: #ff6b6b;
    --secondary: #1d3557;
    --secondary-light: #457b9d;
    --accent: #f4a261;
    --bg-dark: #0f1923;
    --bg-card: #1a2634;
    --bg-section: #f8f9fa;
    --bg-white: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-light: #6c757d;
    --text-white: #f1faee;
    --border-color: #e0e0e0;
    --border-light: #2a3a4a;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --container: 1200px;
    --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-section);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
button { cursor: pointer; background: none; }
i, em { font-style: normal; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--header-h);
    background: rgba(15, 25, 35, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}

.site-header .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 100%;
}

.logo a {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.5rem; font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.5px;
}

.logo a i { color: var(--primary); font-size: 1.6rem; }

.nav-main {
    display: flex; align-items: center; gap: 6px;
}

.nav-main a {
    padding: 8px 18px; border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.7);
    font-size: 0.92rem; font-weight: 500;
    display: flex; align-items: center; gap: 6px;
    transition: var(--transition);
}

.nav-main a:hover, .nav-main a.active {
    color: var(--text-white);
    background: rgba(255,255,255,0.08);
}

.nav-main a.active { color: var(--primary); background: rgba(230, 57, 70, 0.12); }

.nav-main .nav-cta {
    background: var(--primary); color: #fff; border-radius: var(--radius-sm);
    padding: 8px 24px; font-weight: 600;
}

.nav-main .nav-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(230,57,70,0.35); }

/* ===== Mobile Nav (bottom tab) ===== */
.mobile-nav {
    display: none;
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
    background: rgba(15, 25, 35, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
    justify-content: space-around;
}

.mobile-nav a {
    display: flex; flex-direction: column; align-items: center;
    padding: 6px 12px; border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.5); font-size: 0.7rem;
    transition: var(--transition); gap: 2px;
    min-width: 56px;
}

.mobile-nav a i { font-size: 1.25rem; }
.mobile-nav a:hover, .mobile-nav a.active { color: var(--primary); }
.mobile-nav a.active { color: var(--primary); }
.mobile-nav .nav-cta-m { color: var(--primary); font-weight: 600; }

/* ===== Article Hero ===== */
.article-hero {
    margin-top: var(--header-h);
    padding: 60px 0 50px;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    opacity: 0.15;
    z-index: 0;
}

.article-hero .container { position: relative; z-index: 1; }

.article-hero .breadcrumb {
    display: flex; align-items: center; gap: 8px;
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem; margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-hero .breadcrumb a { color: rgba(255,255,255,0.6); }
.article-hero .breadcrumb a:hover { color: var(--primary); }
.article-hero .breadcrumb .sep { color: rgba(255,255,255,0.25); }
.article-hero .breadcrumb .current { color: var(--text-white); }

.article-hero h1 {
    font-size: 2.2rem; font-weight: 800;
    color: var(--text-white); line-height: 1.3;
    max-width: 800px; margin-bottom: 18px;
}

.article-meta {
    display: flex; align-items: center; gap: 20px;
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem; flex-wrap: wrap;
}

.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta .category {
    background: var(--primary); color: #fff;
    padding: 2px 14px; border-radius: 40px;
    font-size: 0.8rem; font-weight: 600;
}

/* ===== Article Content ===== */
.article-section {
    padding: 60px 0 80px;
}

.article-layout {
    display: grid; grid-template-columns: 1fr 320px;
    gap: 48px; align-items: start;
}

.article-body {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 48px;
    box-shadow: var(--shadow-sm);
}

.article-body .content {
    font-size: 1.05rem; line-height: 1.9;
    color: var(--text-primary);
}

.article-body .content p { margin-bottom: 1.5em; }
.article-body .content img { border-radius: var(--radius-sm); margin: 1.8em 0; }
.article-body .content h2 { font-size: 1.5rem; font-weight: 700; margin: 2em 0 0.8em; color: var(--secondary); }
.article-body .content h3 { font-size: 1.25rem; font-weight: 600; margin: 1.6em 0 0.6em; color: var(--secondary); }
.article-body .content ul, .article-body .content ol { padding-left: 1.5em; margin-bottom: 1.5em; }
.article-body .content li { margin-bottom: 0.5em; list-style: disc; }
.article-body .content a { color: var(--primary); border-bottom: 1px solid transparent; }
.article-body .content a:hover { border-bottom-color: var(--primary); }

.article-body .content blockquote {
    border-left: 4px solid var(--primary);
    background: #fef2f2;
    padding: 16px 24px; margin: 1.5em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

.article-footer {
    margin-top: 40px; padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 16px;
}

.article-tags {
    display: flex; gap: 8px; flex-wrap: wrap;
}

.article-tags .tag {
    background: var(--bg-section);
    color: var(--text-secondary);
    padding: 4px 16px; border-radius: 40px;
    font-size: 0.82rem; font-weight: 500;
    transition: var(--transition);
}

.article-tags .tag:hover { background: var(--primary); color: #fff; }

.article-share {
    display: flex; align-items: center; gap: 10px;
    color: var(--text-light); font-size: 0.9rem;
}

.article-share a {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--bg-section); display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary); transition: var(--transition);
}

.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ===== Sidebar ===== */
.article-sidebar {
    display: flex; flex-direction: column; gap: 32px;
}

.sidebar-widget {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
    font-size: 1.1rem; font-weight: 700;
    color: var(--secondary);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
    display: flex; align-items: center; gap: 8px;
}

.sidebar-widget h3 i { color: var(--primary); }

.sidebar-list li {
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.sidebar-list li:last-child { border-bottom: none; }

.sidebar-list a {
    display: flex; align-items: flex-start; gap: 12px;
    color: var(--text-primary);
    font-size: 0.92rem; line-height: 1.5;
    transition: var(--transition);
}

.sidebar-list a:hover { color: var(--primary); }

.sidebar-list a .num {
    flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
    background: var(--bg-section); color: var(--text-light);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 600; margin-top: 2px;
}

.sidebar-list a:hover .num { background: var(--primary); color: #fff; }

.sidebar-list a .s-title { flex: 1; }

.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-md);
    padding: 32px 28px;
    text-align: center;
    color: #fff;
}

.sidebar-cta h4 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.sidebar-cta p { font-size: 0.9rem; opacity: 0.85; margin-bottom: 20px; line-height: 1.6; }
.sidebar-cta .btn {
    display: inline-block; background: #fff; color: var(--primary);
    padding: 10px 32px; border-radius: var(--radius-sm);
    font-weight: 600; transition: var(--transition);
}

.sidebar-cta .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.2); }

/* ===== Related Posts ===== */
.related-section {
    padding: 60px 0;
    background: var(--bg-white);
}

.related-section .section-title {
    text-align: center; margin-bottom: 40px;
}

.related-section .section-title h2 {
    font-size: 1.8rem; font-weight: 700;
    color: var(--secondary);
}

.related-section .section-title p {
    color: var(--text-light); margin-top: 8px;
}

.related-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.related-card {
    background: var(--bg-section);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.related-card .rc-img {
    height: 200px; overflow: hidden;
}

.related-card .rc-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }

.related-card:hover .rc-img img { transform: scale(1.05); }

.related-card .rc-body { padding: 20px 24px 24px; }

.related-card .rc-body .rc-cat {
    display: inline-block; background: var(--primary); color: #fff;
    padding: 2px 14px; border-radius: 40px;
    font-size: 0.75rem; font-weight: 600; margin-bottom: 10px;
}

.related-card .rc-body h3 { font-size: 1.05rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.related-card .rc-body h3 a { color: var(--text-primary); }
.related-card .rc-body h3 a:hover { color: var(--primary); }
.related-card .rc-body .rc-meta { font-size: 0.82rem; color: var(--text-light); }

/* ===== Not Found ===== */
.not-found-box {
    text-align: center; padding: 80px 20px;
}

.not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.8rem; color: var(--text-secondary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; }
.not-found-box .btn-back {
    display: inline-block; background: var(--primary); color: #fff;
    padding: 12px 36px; border-radius: var(--radius-sm);
    font-weight: 600; transition: var(--transition);
}

.not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.75);
    padding: 60px 0 30px;
    margin-bottom: 60px;
}

.footer-grid {
    display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 40px; margin-bottom: 40px;
}

.footer-brand .logo a { font-size: 1.4rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-top: 14px; opacity: 0.7; }

.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a {
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.6); font-size: 1.1rem;
    transition: var(--transition);
}

.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.footer-col h4 {
    font-size: 1rem; font-weight: 600; color: var(--text-white);
    margin-bottom: 18px;
}

.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    color: rgba(255,255,255,0.55); font-size: 0.9rem;
    display: flex; align-items: center; gap: 6px;
    transition: var(--transition);
}

.footer-col ul a i { font-size: 0.65rem; }
.footer-col ul a:hover { color: var(--primary); transform: translateX(4px); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px; text-align: center;
    font-size: 0.85rem; color: rgba(255,255,255,0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
    .related-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .site-header .container { padding: 0 16px; }
    .nav-main { display: none; }
    .mobile-nav { display: flex; }
    .site-footer { margin-bottom: 68px; }

    .article-hero { padding: 40px 0 36px; }
    .article-hero h1 { font-size: 1.6rem; }
    .article-body { padding: 28px 20px; }
    .article-body .content { font-size: 1rem; }

    .article-sidebar { grid-template-columns: 1fr; }

    .related-grid { grid-template-columns: 1fr; }
    .related-card .rc-img { height: 180px; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-brand p { font-size: 0.85rem; }

    .article-meta { gap: 12px; font-size: 0.82rem; }
    .article-footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
    .article-hero h1 { font-size: 1.35rem; }
    .article-body { padding: 20px 16px; }
    .article-body .content { font-size: 0.95rem; }
    .article-body .content h2 { font-size: 1.25rem; }
    .article-body .content h3 { font-size: 1.1rem; }

    .sidebar-widget { padding: 20px; }

    .related-card .rc-body { padding: 16px 18px 20px; }

    .footer-grid { gap: 24px; }
    .footer-col ul a { font-size: 0.85rem; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b7a;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --accent-light: #f9c78a;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0f1a2e;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e9ecef;
            --border-light: #f0f0f5;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 40px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 80px;
            --spacing-block: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.6rem;
        }
        h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }
        .logo a i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo a:hover {
            color: var(--primary);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-main a i {
            font-size: 0.9rem;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-main a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.10);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-main .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            margin-left: 8px;
        }
        .nav-main .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.30);
        }
        .nav-main .nav-cta::after {
            display: none;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-tab .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .mobile-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            color: var(--text-light);
            border-radius: 8px;
            transition: var(--transition);
            min-width: 56px;
        }
        .mobile-tab a i {
            font-size: 1.2rem;
        }
        .mobile-tab a.active {
            color: var(--primary);
        }
        .mobile-tab a.active i {
            transform: scale(1.1);
        }
        .mobile-tab a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(230, 57, 70, 0.25) 0%, transparent 70%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.30);
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 20px;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb span {
            color: var(--accent-light);
        }

        /* ===== Section共用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle {
            color: #fff;
        }
        .section-dark p {
            color: rgba(255, 255, 255, 0.80);
        }
        .section-title {
            text-align: center;
            margin-bottom: 8px;
        }
        .section-title i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto var(--spacing-block);
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.70);
        }

        /* ===== Card通用 ===== */
        .card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(230, 57, 70, 0.15);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(230, 57, 70, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card h3 {
            margin-bottom: 10px;
        }
        .card p {
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .card .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            margin-top: 12px;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== 赛事分类卡片 ===== */
        .race-category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-alt);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .race-category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .race-category-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .race-category-card .card-body {
            padding: 20px 22px 24px;
        }
        .race-category-card .card-body h3 {
            margin-bottom: 8px;
        }
        .race-category-card .card-body p {
            font-size: 0.92rem;
            margin-bottom: 12px;
        }
        .race-category-card .card-body .race-meta {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .race-category-card .card-body .race-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== 赛事列表 ===== */
        .race-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .race-list-item:last-child {
            border-bottom: none;
        }
        .race-list-item:hover {
            padding-left: 12px;
        }
        .race-list-item .list-thumb {
            width: 160px;
            height: 110px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border);
        }
        .race-list-item .list-content {
            flex: 1;
        }
        .race-list-item .list-content h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .race-list-item .list-content p {
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
        .race-list-item .list-content .list-meta {
            display: flex;
            gap: 18px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .race-list-item .list-content .list-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== 统计数字 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-number i {
            font-size: 1.8rem;
            margin-right: 6px;
            color: var(--primary-light);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.80);
            margin-top: 6px;
        }

        /* ===== 流程 ===== */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }
        .step-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent), var(--primary));
            opacity: 0.25;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
            padding: 24px 16px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 14px;
        }
        .step-item h4 {
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.20);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-question:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            display: none;
            line-height: 1.7;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.40);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo a {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo a i {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.60);
            margin: 12px 0 18px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.6rem;
            color: var(--primary);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 标签 / Badge ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.10);
            color: var(--primary);
        }
        .badge-hot {
            background: rgba(230, 57, 70, 0.15);
            color: var(--primary-dark);
        }
        .badge-new {
            background: rgba(42, 157, 143, 0.12);
            color: #2a9d8f;
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 24px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --header-height: 64px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .nav-main a {
                font-size: 0.85rem;
                padding: 6px 12px;
            }
            .nav-main a span {
                display: none;
            }
            .nav-main .nav-cta {
                padding: 6px 16px;
                font-size: 0.85rem;
            }
            .page-banner {
                padding: 60px 0 40px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-grid::before {
                display: none;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .race-list-item {
                flex-direction: column;
                gap: 12px;
            }
            .race-list-item .list-thumb {
                width: 100%;
                height: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .mobile-tab {
                display: block;
            }
            .site-header .nav-main a:not(.nav-cta) i {
                font-size: 1rem;
            }
            body {
                padding-bottom: 64px;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 18px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .card {
                padding: 20px 16px;
            }
            .race-category-card .card-body {
                padding: 16px;
            }
            .nav-main a {
                font-size: 0.78rem;
                padding: 4px 10px;
            }
            .nav-main .nav-cta {
                padding: 4px 14px;
                font-size: 0.78rem;
            }
            .mobile-tab a {
                font-size: 0.6rem;
                min-width: 48px;
                padding: 4px 8px;
            }
            .mobile-tab a i {
                font-size: 1rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== Focus / Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 移动端底部安全区 ===== */
        @supports (padding-bottom: env(safe-area-inset-bottom)) {
            .mobile-tab {
                padding-bottom: calc(6px + env(safe-area-inset-bottom));
            }
            body {
                padding-bottom: calc(64px + env(safe-area-inset-bottom));
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b2b4a;
            --primary-light: #134174;
            --primary-dark: #071d32;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-gray: #f1f5f9;
            --bg-dark: #0b1a2e;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 4px 10px -5px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
            --shadow-xl: 0 35px 60px -15px rgba(0, 0, 0, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --tab-h: 64px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--header-h);
            padding-bottom: var(--tab-h);
        }

        @media (min-width: 992px) {
            body {
                padding-bottom: 0;
            }
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / 桌面导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-h);
            background: rgba(11, 43, 74, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 12px;
        }

        .site-header .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.3px;
            text-decoration: none;
        }

        .site-header .logo a i {
            font-size: 26px;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.15);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .site-header .logo a:hover i {
            transform: rotate(-10deg) scale(1.05);
            background: rgba(245, 158, 11, 0.25);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-main a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14.5px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-main a i {
            font-size: 14px;
        }

        .nav-main a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-main a.active {
            color: var(--text-white);
            background: rgba(245, 158, 11, 0.18);
        }

        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        .nav-main .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            margin-left: 8px;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
        }

        .nav-main .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
            color: var(--primary-dark) !important;
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            height: var(--tab-h);
            background: rgba(11, 43, 74, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-around;
            padding: 0 4px;
            box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.15);
        }

        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            font-size: 11px;
            font-weight: 500;
            transition: var(--transition);
            min-width: 56px;
            position: relative;
        }

        .mobile-tab-bar .tab-item i {
            font-size: 20px;
            transition: var(--transition);
        }

        .mobile-tab-bar .tab-item span {
            font-size: 10.5px;
            line-height: 1.2;
        }

        .mobile-tab-bar .tab-item:hover {
            color: rgba(255, 255, 255, 0.85);
        }

        .mobile-tab-bar .tab-item.active {
            color: var(--accent);
        }

        .mobile-tab-bar .tab-item.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 3px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
        }

        .mobile-tab-bar .tab-item.active i {
            transform: translateY(-1px);
        }

        @media (min-width: 992px) {
            .mobile-tab-bar {
                display: none !important;
            }
        }

        /* ===== 页面标题区 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--text-white);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 43, 74, 0.92) 0%, rgba(7, 29, 50, 0.88) 50%, rgba(11, 43, 74, 0.75) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-banner h1 i {
            color: var(--accent);
            margin-right: 10px;
        }

        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.6;
        }

        .page-banner .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .page-banner .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }
        .page-banner .breadcrumb-custom a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb-custom span {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0 40px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 15px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-gray);
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.6;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .text-center .section-subtitle {
            margin: 0 auto 32px;
        }

        .section-header {
            margin-bottom: 48px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }

        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .card-custom:hover .card-icon {
            background: var(--accent);
            color: var(--text-white);
        }

        .card-custom h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .card-custom p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 步骤时间线 ===== */
        .step-timeline {
            position: relative;
            padding-left: 40px;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--accent), var(--primary-light));
            border-radius: 3px;
        }

        .step-item {
            position: relative;
            padding: 0 0 40px 24px;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-item .step-num {
            position: absolute;
            left: -40px;
            top: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
            z-index: 2;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 520px;
        }

        .step-item .step-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-dark);
            margin-bottom: 8px;
        }

        @media (max-width: 768px) {
            .step-timeline {
                padding-left: 32px;
            }
            .step-timeline::before {
                left: 14px;
            }
            .step-item {
                padding-left: 16px;
            }
            .step-item .step-num {
                left: -32px;
                width: 28px;
                height: 28px;
                font-size: 13px;
            }
        }

        /* ===== 安全提示标签 ===== */
        .safety-tip {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            background: rgba(245, 158, 11, 0.06);
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--accent);
            margin-bottom: 12px;
        }

        .safety-tip i {
            font-size: 20px;
            color: var(--accent);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .safety-tip .tip-content h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .safety-tip .tip-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            gap: 16px;
        }

        .faq-item .faq-q i {
            color: var(--accent);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item .faq-a {
            margin-top: 12px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-block .container {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .cta-block p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }

        .cta-block .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.45);
            color: var(--primary-dark);
        }

        .cta-block .btn-cta i {
            font-size: 18px;
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 36px 20px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block p {
                font-size: 15px;
            }
            .cta-block .btn-cta {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            font-size: 14px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand .logo a {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            text-decoration: none;
        }

        .site-footer .footer-brand .logo a i {
            color: var(--accent);
            font-size: 24px;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.65);
            font-size: 16px;
            transition: var(--transition);
            text-decoration: none;
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13.5px;
            transition: var(--transition);
        }

        .site-footer .footer-col ul li a i {
            font-size: 10px;
            color: var(--accent);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding-top: 40px;
            }
        }

        /* ===== 工具类 ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-dark);
        }

        .badge-custom.primary {
            background: rgba(11, 43, 74, 0.08);
            color: var(--primary);
        }

        .btn-outline-accent {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            border: 2px solid var(--accent);
            color: var(--accent);
            background: transparent;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-outline-accent:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
        }

        .text-accent {
            color: var(--accent);
        }

        .mb-0 {
            margin-bottom: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 992px) {
            .nav-main a {
                padding: 6px 12px;
                font-size: 13px;
            }
            .nav-main a span.nav-label {
                display: none;
            }
            .site-header .logo a {
                font-size: 18px;
            }
        }

        @media (max-width: 768px) {
            .nav-main a:not(.nav-cta) i {
                font-size: 16px;
            }
            .nav-main a span.nav-label {
                display: none;
            }
            .nav-main .nav-cta {
                padding: 6px 16px;
                font-size: 13px;
            }
            .nav-main a {
                padding: 6px 10px;
            }
        }

        @media (max-width: 480px) {
            .site-header .logo a {
                font-size: 16px;
                gap: 6px;
            }
            .site-header .logo a i {
                font-size: 20px;
                padding: 6px;
            }
            .nav-main a {
                padding: 4px 8px;
                font-size: 12px;
            }
            .nav-main .nav-cta {
                padding: 4px 12px;
                font-size: 12px;
            }
        }

        /* ===== 打印样式 ===== */
        @media print {
            .site-header,
            .mobile-tab-bar,
            .site-footer {
                display: none !important;
            }
            body {
                padding: 0;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            /* 主色系 */
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --primary-bg: rgba(230, 57, 70, 0.08);

            /* 辅色系 */
            --secondary: #1d3557;
            --secondary-dark: #14253d;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #f8c291;

            /* 中性色 */
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --border-light: #f0f0f0;

            /* 圆角 */
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;

            /* 阴影 */
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.14);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.18);

            /* 间距 */
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 24px;
            --space-lg: 48px;
            --space-xl: 80px;
            --space-2xl: 120px;

            /* 字体 */
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-md: 1.125rem;
            --font-size-lg: 1.5rem;
            --font-size-xl: 2rem;
            --font-size-2xl: 2.75rem;
            --font-size-3xl: 3.5rem;
            --line-height: 1.7;

            /* 过渡 */
            --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            line-height: var(--line-height);
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .container-narrow {
            max-width: 960px;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-header .logo a {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: var(--font-size-lg);
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            transition: opacity var(--transition);
        }
        .site-header .logo a:hover {
            opacity: 0.85;
            color: var(--secondary);
        }
        .site-header .logo i {
            color: var(--primary);
            font-size: 1.75rem;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            font-size: var(--font-size-sm);
            transition: background var(--transition), color var(--transition), transform var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.2px;
        }
        .nav-main a:hover {
            background: var(--primary-bg);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .nav-main a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .nav-main a.active:hover {
            background: var(--primary-dark);
            color: var(--text-white);
        }
        .nav-main a.nav-cta {
            background: var(--primary);
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.30);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .nav-main a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.40);
        }

        /* 移动端导航按钮 */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-bg);
        }

        /* ===== 移动端底部 Tab 导航 ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
            z-index: 999;
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            color: var(--text-light);
            font-weight: 500;
            transition: color var(--transition), transform var(--transition);
            border-radius: var(--radius-sm);
            min-width: 56px;
        }
        .mobile-bottom-nav a i {
            font-size: 1.2rem;
            transition: transform var(--transition);
        }
        .mobile-bottom-nav a:hover {
            color: var(--primary);
        }
        .mobile-bottom-nav a:hover i {
            transform: scale(1.1);
        }
        .mobile-bottom-nav a.active {
            color: var(--primary);
        }
        .mobile-bottom-nav a.active i {
            transform: scale(1.1);
        }

        /* ===== 移动端抽屉菜单 ===== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-alt);
            z-index: 998;
            padding: var(--space-md);
            overflow-y: auto;
            transform: translateY(-12px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease, transform 0.35s ease;
            border-top: 1px solid var(--border-light);
        }
        .mobile-drawer.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-size: var(--font-size-md);
            font-weight: 500;
            color: var(--text);
            transition: background var(--transition), color var(--transition);
        }
        .mobile-drawer a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .mobile-drawer a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .mobile-drawer a.nav-cta {
            background: var(--primary);
            color: var(--text-white);
            margin-top: var(--space-sm);
            justify-content: center;
            font-weight: 600;
        }
        .mobile-drawer a.nav-cta:hover {
            background: var(--primary-dark);
        }

        /* ===== Hero / 横幅 ===== */
        .page-hero {
            position: relative;
            padding: var(--space-xl) 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            min-height: 320px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(230, 57, 70, 0.55) 100%);
            z-index: 0;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-hero h1 {
            font-size: var(--font-size-2xl);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero p {
            font-size: var(--font-size-md);
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: var(--space-sm);
            margin-bottom: var(--space-md);
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.7);
        }
        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--text-white);
        }
        .page-hero .breadcrumb span {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-xl) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-title {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.3px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 8px;
        }
        .section-title-center {
            text-align: center;
            display: block;
        }
        .section-title-center::after {
            margin: 8px auto 0;
        }
        .section-subtitle {
            font-size: var(--font-size-md);
            color: var(--text-light);
            max-width: 640px;
            margin: var(--space-sm) auto 0;
            text-align: center;
            line-height: 1.8;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--space-lg);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-md);
        }
        .card-grid-2 {
            grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
        }
        .card-grid-4 {
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .card-body {
            padding: var(--space-md);
        }
        .card-body h3 {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-xs);
            line-height: 1.4;
        }
        .card-body p {
            font-size: var(--font-size-sm);
            color: var(--text-light);
            line-height: 1.7;
        }
        .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
            margin-bottom: var(--space-sm);
        }
        .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: var(--space-sm);
            font-weight: 600;
            color: var(--primary);
            font-size: var(--font-size-sm);
            transition: gap var(--transition);
        }
        .card-body .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: var(--font-size-base);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.40);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(29, 53, 87, 0.25);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(29, 53, 87, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: var(--font-size-md);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: var(--font-size-sm);
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-success {
            background: rgba(46, 204, 113, 0.12);
            color: #27ae60;
        }
        .badge-warning {
            background: rgba(244, 162, 97, 0.15);
            color: #e67e22;
        }
        .badge-info {
            background: rgba(69, 123, 157, 0.12);
            color: var(--secondary-light);
        }

        /* ===== 服务特色区块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: var(--space-lg);
        }
        .feature-item {
            text-align: center;
            padding: var(--space-md);
            border-radius: var(--radius-md);
            transition: transform var(--transition), background var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            background: var(--bg-alt);
        }
        .feature-item .icon-wrap {
            width: 72px;
            height: 72px;
            margin: 0 auto var(--space-md);
            background: var(--primary-bg);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
            transition: background var(--transition), transform var(--transition);
        }
        .feature-item:hover .icon-wrap {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }
        .feature-item h3 {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-xs);
        }
        .feature-item p {
            font-size: var(--font-size-sm);
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: var(--space-md);
            text-align: center;
        }
        .stat-item {
            padding: var(--space-md);
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: var(--font-size-2xl);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: var(--font-size-sm);
            color: var(--text-light);
            margin-top: 4px;
        }
        .stat-item .stat-icon {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: var(--space-sm);
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: var(--space-lg);
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            margin: 0 auto var(--space-md);
            background: var(--primary);
            color: var(--text-white);
            font-size: var(--font-size-lg);
            font-weight: 700;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.30);
        }
        .step-item h4 {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-xs);
        }
        .step-item p {
            font-size: var(--font-size-sm);
            color: var(--text-light);
            line-height: 1.7;
        }
        .step-item:not(:last-child)::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 20px;
            right: -20px;
            color: var(--primary);
            font-size: 1rem;
            opacity: 0.5;
        }
        .steps .step-item:last-child::after {
            display: none;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .content-list-item {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            padding: var(--space-sm) var(--space-md);
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .content-list-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .content-list-item i {
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .content-list-item a {
            color: var(--text);
            font-weight: 500;
            flex: 1;
        }
        .content-list-item a:hover {
            color: var(--primary);
        }
        .content-list-item .badge {
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            gap: var(--space-sm);
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: var(--space-md);
            font-weight: 600;
            font-size: var(--font-size-base);
            color: var(--secondary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-bg);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 var(--space-md) var(--space-md);
            font-size: var(--font-size-sm);
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: var(--space-xl) 0;
            text-align: center;
            isolation: isolate;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.90) 0%, rgba(230, 57, 70, 0.60) 100%);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--space-sm);
        }
        .cta-section p {
            font-size: var(--font-size-md);
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }
        .cta-section .btn {
            margin: 0 var(--space-xs);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: var(--space-xl) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo a {
            color: var(--text-white);
            font-size: var(--font-size-lg);
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            gap: var(--space-sm);
        }
        .footer-brand .logo a:hover {
            color: var(--primary-light);
        }
        .footer-brand .logo i {
            color: var(--primary);
        }
        .footer-brand p {
            margin-top: var(--space-sm);
            font-size: var(--font-size-sm);
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: var(--space-sm);
            margin-top: var(--space-md);
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: var(--font-size-base);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--space-md);
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: var(--space-sm);
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: var(--font-size-sm);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 0.6rem;
            color: var(--primary);
        }

        .footer-bottom {
            padding: var(--space-md) 0;
            text-align: center;
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom span {
            display: block;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-hero h1 {
                font-size: var(--font-size-xl);
            }
            .steps {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }
            .nav-main {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-bottom-nav {
                display: flex;
            }

            .page-hero {
                min-height: 240px;
                padding: var(--space-lg) 0;
                background-attachment: scroll;
            }
            .page-hero h1 {
                font-size: var(--font-size-lg);
            }
            .page-hero p {
                font-size: var(--font-size-base);
            }

            .section {
                padding: var(--space-lg) 0;
            }
            .section-title {
                font-size: var(--font-size-lg);
            }

            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .card-grid-4 {
                grid-template-columns: 1fr 1fr;
            }

            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .footer-brand p {
                max-width: 100%;
            }

            .cta-section {
                padding: var(--space-lg) 0;
                background-attachment: scroll;
            }
            .cta-section h2 {
                font-size: var(--font-size-lg);
            }

            .faq-grid {
                max-width: 100%;
            }

            .content-list-item {
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space-sm);
            }
            .page-hero h1 {
                font-size: var(--font-size-md);
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: var(--font-size-base);
            }
            .footer-social a {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .breadcrumb {
                flex-wrap: wrap;
                font-size: 0.75rem;
            }
            .mobile-bottom-nav a {
                font-size: 0.6rem;
                padding: 4px 8px;
                min-width: 48px;
            }
            .mobile-bottom-nav a i {
                font-size: 1rem;
            }
            .section-title {
                font-size: var(--font-size-md);
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--space-sm);
        }
        .mt-md {
            margin-top: var(--space-md);
        }
        .mt-lg {
            margin-top: var(--space-lg);
        }
        .mb-sm {
            margin-bottom: var(--space-sm);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .gap-sm {
            gap: var(--space-sm);
        }
        .gap-md {
            gap: var(--space-md);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== 服务详情区块 ===== */
        .service-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .service-detail-grid .service-img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
        }
        .service-detail-grid .service-text h3 {
            font-size: var(--font-size-lg);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-sm);
        }
        .service-detail-grid .service-text p {
            font-size: var(--font-size-base);
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: var(--space-sm);
        }
        .service-detail-grid .service-text ul {
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }
        .service-detail-grid .service-text ul li {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: var(--font-size-sm);
            color: var(--text);
        }
        .service-detail-grid .service-text ul li i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .service-detail-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .service-detail-grid .service-img {
                order: -1;
            }
        }

        /* ===== 平台入口卡片 ===== */
        .entry-card {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .entry-card .entry-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: var(--space-md);
        }
        .entry-card h3 {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: var(--space-xs);
        }
        .entry-card p {
            font-size: var(--font-size-sm);
            color: var(--text-light);
            margin-bottom: var(--space-md);
        }
        .entry-card .btn {
            width: 100%;
        }